Γ-opt Research Group
Γ-opt Research Group
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Publications
Production and operations planning
Periodic review system for inventory replenishment control for a two-echelon logistics network under demand uncertainty: a two-stage stochastic programming approach
We propose a novel methodology for replenishment and control systems for inventories of two-echelon logistics networks using a …
Paulo Cunha
,
Fabricio Oliveira
,
Fernanda Raupp
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DOI
A two-stage stochastic programming model for periodic replenishment control system under demand uncertainty
The inventory control system consists of defining strategies to manage inventory replenishment such that costs involved in ordering, …
Paulo Cunha
,
Fernanda Raupp
,
Fabricio Oliveira
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DOI
A new mathematical model for the workover rig scheduling problem
One of the most important activities in the oil and gas industry is the intervention in wells for maintenance services, which is …
Miguel Pérez
,
Fabricio Oliveira
,
Silvio Hamacher
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DOI
A framework for crude oil scheduling in an integrated terminal-refinery system under supply uncertainty
Operational decisions for crude oil scheduling activities are determined on a daily basis and have a strong impact on the overall …
Fabricio Oliveira
,
Paula Nunes
,
Rosa Blajberg
,
Silvio Hamacher
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DOI
A strategy based on convex relaxation for solving the oil refinery operations planning problem
Oil refining is one of the most complex activities in the chemical industry due to its nonlinear nature, which ruins the convexity …
Tiago Andrade
,
Gabriela Ribas
,
Fabricio Oliveira
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DOI
Tactical capacity planning in a real-world ETO industry case: A robust optimization approach
Uncertainty has a significant impact on the stability and performance of engineering-to-order (ETO) production systems by affecting due …
Andréa Nunes Carvalho
,
Fabricio Oliveira
,
Luiz Felipe Scavarda
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DOI
An enhanced L-Shaped method for optimizing periodic-review inventory control problems modeled via two-stage stochastic programming
This paper presents the development of an enhanced L-Shaped method applied to an inventory management problem that considers a …
Felipe Silva Placido dos Santos
,
Fabricio Oliveira
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DOI
An optimisation approach for capacity planning: modelling insights and empirical findings from a tactical perspective
The academic literature presents a research-practice gap on the application of decision support tools to address tactical planning …
Andréa Nunes Carvalho
,
Luiz Felipe Scavarda
,
Fabricio Oliveira
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DOI
Robust Optimization for Scheduling and Lot-sizing of a Single Machine with Sequence-dependent Changeovers
A plethora of contributions have appeared in the literature over the past decade in the area of production planning of a single machine …
Hossein Mostafaei
,
Fabricio Oliveira
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DOI
Tactical capacity planning in a real-world ETO industry case: An action research
Many engineering-to-order (ETO) organizations are multi-project capacity-driven production systems in which capacity planning is of …
Andréa Nunes Carvalho
,
Fabricio Oliveira
,
Luiz Felipe Scavarda
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DOI
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